Home / 570,242,516.16-786,934,999.76-309,482,132.16

Finding the Fourth Proportional to 570,242,516.16, 786,934,999.76 and 309,482,132.16

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Solution

The fourth proportional to 570,242,516.16, 786,934,999.76 and 309,482,132.16 is: 427,085,520.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,242,516.16 : 786,934,999.76 = 309,482,132.16 : x
  2. Step 2: Convert to fraction form
    570,242,516.16/786,934,999.76 = 309,482,132.16/x
  3. Step 3: Cross multiply
    570,242,516.16x = 786,934,999.76 × 309,482,132.16
  4. Step 4: Simplify right side
    570,242,516.16x = 243,542,321,597,053,920
  5. Step 5: Solve for x
    x = 243,542,321,597,053,920/570,242,516.16
  6. Step 6: Final answer
    x = 427,085,520.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.